lithium
noun /ˈlɪθiəm/
/ˈlɪθiəm/
[uncountable] (symbol Li)
- a chemical element. Lithium is a soft, very light, silver-white metal used in batteries and alloys.Oxford Collocations DictionaryLithium is used before these nouns:
- battery
Word Originearly 19th cent.: from lithia ‘lithium oxide’ + -ium.